Array substrate for in-plane switching mode liquid crystal display device and method of driving display device having the same

Abstract

An array substrate and method for an in-plane switching mode liquid crystal display device are provided. The array substrate according to an embodiment includes a pixel electrode in a pixel region; a common electrode in the pixel region, the common electrode being parallel to the pixel electrode; a first electrode in the pixel region and crossing the pixel and common electrodes; and a second electrode in the pixel region, the second electrode being parallel to the first electrode.

What is claimed is: 
     
       1. A method of driving an in-plane switching mode liquid crystal display device, which includes a pixel electrode on a first substrate, a common electrode on the first substrate, the common electrode being parallel to the pixel electrode, a first electrode on the first substrate and crossing the pixel and common electrodes, a second electrode on the first substrate and parallel to the first electrode, and a second substrate facing the first substrate, the method comprising:
 applying a first voltage to the pixel electrode and the first electrode and a second voltage to the common electrode and the second electrode during a first period, wherein the first voltage is different from the second voltage; and 
 applying third and fourth voltages to the first and second electrodes, respectively, and the second voltage to the pixel and common electrodes during a second period, the third voltage being different from the fourth voltage. 
 
     
     
       2. The method according to  claim 1 , wherein the first period is alternated with the second period. 
     
     
       3. The method according to  claim 2 , wherein the first period is immediately adjacent from the second period. 
     
     
       4. The method according to  claim 1 , wherein the second and fourth voltages are the same. 
     
     
       5. The method according to  claim 1 , wherein the third voltage is between about 5V and about 50V. 
     
     
       6. The method according to  claim 1 , wherein a period of one frame is a summation of the first and second periods. 
     
     
       7. The method according to  claim 6 , wherein the second period is between one twentieth and one half as much as the period of one frame. 
     
     
       8. The method according to  claim 1 , wherein the steps of applying the first and second voltages and applying the third and fourth voltages are repeatedly performed. 
     
     
       9. A method of driving an in-plane switching mode liquid crystal display device, which includes a pixel electrode on a first substrate, a common electrode on the first substrate, the common electrode being parallel to the pixel electrode, a first electrode on the first substrate and crossing the pixel and common electrodes, a second electrode on the first substrate and parallel to the first electrode, and a second substrate facing the first substrate, the method comprising:
 applying first and second voltages to the pixel and common electrodes, respectively, during a first period; and 
 applying third and fourth voltages to the first and second electrodes, respectively, during a second period, the third voltage being different from the fourth voltage, 
 wherein the second period occurs immediately after the first period.